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IgorC [24]
3 years ago
9

Which pair does not represent the probabilities of complimentary events?

Mathematics
1 answer:
Keith_Richards [23]3 years ago
6 0
Can we have a picture?
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7 A basket has 40 fruits. 10 of them are apples, 25 are oranges and the rest are mangoes
BabaBlast [244]

Answer:

20%

Step-by-step explanation:

as we add 10 +25 = 35

so if we subract 40 from 35 it is 5 so mangoes are 5

5

_ × 100 =20%

25

7 0
2 years ago
Ignore the answer selected
Masteriza [31]

Answer:

Option B is correct.

Step-by-step explanation:

=6(cos270+isin270)\\\\=6(0-i)\\\\=6(-i)\\\\=-6i

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Which measurement is the more precise measurement:
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Answer: a correct me if I’m wrong

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3 years ago
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2(7x+4)=4x-6(2-x)+7what is the answer to this trigonometry question
Arte-miy333 [17]

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Step-by-step explanation:

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8 0
2 years ago
in a given year, the rate of flu infection for the general public was 8.3%. And sample of 200 people who receive the flu vaccine
makkiz [27]

Answer:

\fbox{\begin{minipage}{10em}Option A is correct\end{minipage}}

Step-by-step explanation:

<em>Step 1: Define significance level</em>

In this hypothesis testing problem, significance levels α is selected: 0.05, the associated z-value from Laplace table:

Φ(z) = α - 0.5 = 0.05 - 0.5 = -0.45

=> z = -1.645

<em>Step 2: Define null hypothesis (</em>H_{0}<em>) and alternative hypothesis (</em>H_{1}<em>)</em>

H_{0} : rate of flu infection p = 8.3% or 8.3/100 = 0.083

H_{1} : rate of flu infection p < 8.3% or 8.3/100 = 0.083

<em>Step 3: Apply the formula to check test statistic:</em>

K = \frac{f - p}{\sqrt{p(1 - p)} } * \sqrt{n}

with f is actual sampling percent, p is rate of flu infection of H_{0}, n is number of samples.

The null hypothesis will be rejected if K < z

<em>Step 4: Calculate the value of K and compare with </em>z

K = \frac{(\frac{3.5}{100})  - 0.083}{\sqrt{0.083(1 - 0.083)} } * \sqrt{200} = -2.46  

We have -2.46 < -1.645

=>This is good evidence to reject null hypothesis.

=> The actual rate is lower. (As H_{1} states)

Hope this helps!

:)

5 0
3 years ago
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